Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1982-01-06
1984-01-17
Chin, Tommy P.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358 63, 358231, 35016212, 356352, H04N 574, H04N 931, G01B 902
Patent
active
044266634
ABSTRACT:
In a system for real-time coherent optical filtering of visual imagery which encompasses a laser and a set of lenses for transmitting a visual target image of an input, a Fabry-Perot interferometer for filtering the target image to produce a filtered target image at an output having a predetermined bandwidth of spatial frequency information, the improvements relate to the output being in the form of a low-light level video system capable of detecting the filtered image even when at a low level of luminance, and a laser adjustable in operating power between low and high levels and in operating wavelength within a wide range for adjusting the bandwidths of the interferometer between narrow and broad ranges.
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Specifying Relevant Spatial Information for Image Evaluation and Display Design: An Explanation of How We See Certain Objects, by Arthur P. Ginsburg, Proceedings of the SID, vol. 21/3, 1980, pp. 219-227.
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Indebetouw, G., "Tunable Spatial Filtering with a Fabry-Perot Etalon," Applied Optics, Mar. 1, 1980, vol. 19, No. 5, pp. 761-764.
Evans David W.
Ginsburg Arthur P.
Chin Tommy P.
Flanagan John R.
Singer Donald J.
The United States of America as represented by the Secretary of
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